.container{
    width: 1200px;
    height: 600px;
    border: 1px solid #666;
    margin: 0px auto;
    /* background-color: rgb(146, 158, 153); */
}
.container > .class-row2{
    height: 10%;
    background-color: #ccc;
}
.container > .class-row2 .floatr{
    float: right;
    line-height: 60px;
    padding: 0px 10px;
}
.container > .class-row2 .floatl{
    float: left;
    line-height: 60px;
    padding: 0px 10px;
}
.container > .class-row2 .floatr > a {
    color: red;
}
.container > .class-row10{
    height: 80%;
}
.class-row10 > ul {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;   
    align-items: center;     
}
.class-row10 > ul li {
    display: flex;
    width: 300px;
    justify-content:space-between ;
    position: relative;
}
.class-row10 > ul li input {
    width: 220px;
}
.active {
    display: none;
    position: absolute;
    top: 35px;
    left: 50%;
    transform: translateX(-50%);
    color: red;
    font-size: 14px;
}
.active1{
    display: block;
}